ALSA: hda/realtek: Add mute LED quirk for HP Pavilion 15-eg0xxx

ALSA: hda/realtek: Add mute LED quirk for HP Pavilion 15-eg0xxx

The HP Pavilion 15-eg0xxx with subsystem ID 0x103c87cb uses a Realtek
ALC287 codec with a mute LED wired to GPIO pin 4 (mask 0x10). The
existing ALC287_FIXUP_HP_GPIO_LED fixup already handles this correctly,
but the subsystem ID was missing from the quirk table.

GPIO pin confirmed via manual hda-verb testing:
  hda-verb SET_GPIO_MASK 0x10
  hda-verb SET_GPIO_DIRECTION 0x10
  hda-verb SET_GPIO_DATA 0x10

Signed-off-by: César Montoya <sprit152009@gmail.com>
Link: https://patch.msgid.link/20260321153603.12771-1-sprit152009@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>